000
AXPZ20 KNHC 170920
TWDEP 

Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1005 UTC Sat Apr 17 2021

Tropical Weather Discussion for the eastern Pacific Ocean from
the Equator to 32N, east of 140W. The following information is
based on satellite imagery, weather observations, radar, and
meteorological analysis.

Based on 0600 UTC surface analysis and satellite imagery through
0800 UTC.

...INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

The monsoon trough extends from 08N82W to 09N95W to 07N102W to
07N109W. The ITCZ continues from 07N109W to 05N120W to 05N128W 
to beyond 04N140W. Scattered moderate isolated strong convection
is noted from 03N to 10N between 84W and 107W.

OFFSHORE WATERS WITHIN 250 NM OF MEXICO...

A weak 1023 mb high is centered near 30N129W. A surface trough 
is analyzed along the Baja California peninsula from 32N115.5W 
to 24N110W. Scatterometer data shows moderate to fresh NW winds 
near the coast of Baja California. Winds are gentle to moderate 
over the remainder of the area, including the Gulf of California.
Seas are estimated to be 5 to 6 ft, except 1-3 ft in the Gulf of
California. 

Moderate to fresh NW winds will continue west of Baja California
through Sun morning. A moderate gap wind event over the Gulf of 
Tehuantepec may occur on Wed. Seas over the Gulf of Tehuantepec 
should remain 5 to 6 ft through Tue night, then increase to 6 to 
8 ft Wed. Seas elsewhere will generally remain 4 to 6 ft over the
offshore waters and less than 3 ft in the Gulf of California.

OFFSHORE WATERS WITHIN 250 NM OF CENTRAL AMERICA, COLOMBIA, and 
WITHIN 750 NM OF ECUADOR...

Light to gentle winds and 4 to 6 ft seas prevail across the
forecast waters. Little change is expected through Mon night. 
Enhanced long-period SW swell may enter the equatorial waters on 
Tue. Widespread shower activity and strong thunderstorms are 
possible east of 95W through Sun. 

REMAINDER OF THE AREA...

A weak pressure gradient between a 1023 mb high near 30N129W and
lower pressures across the ITCZ/monsoon trough region supports 
gentle to moderate and locally fresh NE trade winds. Seas are 5 
to 7 ft across the region. High pressure building north of 30N 
Sun through Tue will produce fresh to strong trade winds and 7 
to 9 ft seas west of 130W. An enhanced SW swell may enter the 
equatorial waters beginning on Tue, raising seas to 8 to 9 ft. 
At the same time enhanced NW swell may enter the northern waters
west of the Baja California, boosting seas there to 8 to 9 ft.

$$
Mundell